Home / 1,621.65-2,232.72-1,372.44

Finding the Fourth Proportional to 1,621.65, 2,232.72 and 1,372.44

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Solution

The fourth proportional to 1,621.65, 2,232.72 and 1,372.44 is: 1,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.65 : 2,232.72 = 1,372.44 : x
  2. Step 2: Convert to fraction form
    1,621.65/2,232.72 = 1,372.44/x
  3. Step 3: Cross multiply
    1,621.65x = 2,232.72 × 1,372.44
  4. Step 4: Simplify right side
    1,621.65x = 3,064,274.24
  5. Step 5: Solve for x
    x = 3,064,274.24/1,621.65
  6. Step 6: Final answer
    x = 1,889.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.